Improvement in horseshoes



UNITED 4S'IATEs PATENT OFFICE(` `HARRY B. CORNISH` AND CHARLES P.

HUNT, OF- RIVER FALLS, WISCONSIN.

IMPRCVEMENT IN, HoRsEsHoEs.

Specitication forming part of Letters Patent No. l 86,544, dated January 23, 1877; application tiled l November 11, 11576.

'Lo all whom t may concern,.-

Be it known that we, HARRY BUTTON COR- Nrsn and CHARLES PLAT HUNT, of River Falls, in the county ot' Pierce ,and State `of Wisconsin, haveinvented a new and Improved Horseshoe, ot' which the following is a speciv ljcation Figure l is a transverse section on line :r w in Fig. 2. Fig. 2 is a front view. Fig. 3 is a perspective view of one of the toe-calks. Fig. 4 is a view lot' the upper side ot" the same.

Similar letters of reference indicate corresponding parts. Our invention consists "in cutting slightly tapering arc-shaped grooves in the under surface ot' horseshoes. The arc .of the said grooves is described in vertical plane, and the grooves are dovetail in transverse section and open downward. It also consists'in forming upon the base ot' the calks a tongue that is the counterpart of the arcshaped dovetail groove in the shoe.

The object ot' the invention is to provide a4 horseshoe in which the-calks may be readily inserted or removed, but which cannot beconie loosened by any action o f the horses foot.V

In the drawing, A is a horseshoe having the same general form as the ordinary shoes. B is an arc-shaped groove cut in `the toe of the shoe to receive -the toe-calli., The said groove is slightly tapering in the direction of its length, and is a dovetail in transverse section. The narrower and concave side ot' the groove opens downward. The metal forming the shoe 'projects below ,the under surface of the shoe, at the rear side of the groove, forming a support for the back of the calk. The

metal in front of the groove is cut away upon a curve or arc,`as shownat a in Fig. 2. .C 1s a toe-calk, the` edge of which is of ordinary form but its base is provided with a dovetail l arc-shaped tongue, D, which is the counterpart of the groove B, and which will retain the calk when it is forced into the said groove. E is a groove cut in the heel ot' the shoe t'or receiving the heel-calli. The said groove is dovetail in transverse section, and is similar to the groove B. Both `lips or sides ofthe groove are curved orinade concave at b. The

groove E runs parallel to the side of the shoe .at the heel, and is made slightlyr tapering in the direction of its length, as in the case of the groove B, so that when the heel'callis are put in place in the shoethey will be firmly retained and not liable to accidental loosening. F is the heel-calli, `having the dovetail tongue Crforined upon its base at right angles with the edge ofthe calli. Convex shoulders care formed at each side of the dovetail tongue G,

which bear upon the concave sides b ot' the l groove E. The said tongue is made slightly tapering in the direction ot'its length, so that it wedges in the groove E as it is driven in.

rlhe advantages claimed for our invention are, that thelcalks are retained in place edectually by the arc-shaped dovetail tongues and grooves, and cannot by accident become loosened. They may be readily changed or re- `newed without removing the shoe from the horses foot.-

Having thus described our invention, We claim as new and desire to secure by Letters Patentrlhe combination of the calks, having arcshaped dovetail tapering tongues, with the arc-shaped dovetal tapering grooves in the horseshoe, substantially as herein shown and described.-

ALLEN P. WEED, CHARLES H. GANEIELD. 

